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DAVID F. STRATTON, OF CHRISTIANSBURG, OHIO.

Letters Patent No. 72.427. dated December 17, 1867.

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TO ALL WHOM IT MAY CONCERN:

Bc it knovvn that I, D. F. ASTRATTONgAof Christiansburg, in the county of Champaign, Iand State of Ohio, have invented a new and useful Improvement in Gauges for Setting the Pitch of Wagon-Axles; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being'had to the annexed drawings, making part of this specication, in which- Figure 1 is a side elevation,

Figure 2 is anlend elevation, and

Figure 3 is a vertical section on the line Z Z.

The same letters are employed in all the figures in the indication of identical parts.

In making wagon-axles, the spindles are not made in line with the axis ot' the axle. They are turned down,to give a slight outwardly inclination to the top ofthe wheels, and are slightly inclined 'towards the front,

to throw the front .part of the wheels towards one another, for the purpose of preventing pressure upon the linchpin. It is necessary that these angles should be the same on both ends ofthe axle, and upon both axles. To so construct the axle is a work of considerable delicacy, to facilitate which this gauge is intended. It is formed as follows is a beam of Wood having an opening at A2, for convenience in handling the gauge. B is an adjustable standard, sliding on the beam A, from which it projects on both sides. G is a xed standard, ofthe saine length as the long end ofthe standard B. To this standard C is hinged the swing D, bent at right angles, and adjustably fastened to the angularV piece F, on the end of the beam, vby a set-screw, E. The edge of the part F may be graduated, for the purpose of facilitating measgremcntsin adjustingthe swing. The vertical portion of the swing D, near the axle, should be cut away on one side, fo give elasticity to that part of the swing, so as to permit it to set against the face ofthe projection F. G is a fixed projection, of the same height from the beam as the point of the projection B. II is an adjustnblestandard, attached to the beam by a setscrcw, l, passing through a slot therein. It, also, is graduated.

The gauge is applied as follows: First, the swing D is adjusted, to give the downward. inclination of the spindle, and the axle is bent to conform to this guide. By reversing the .gauge on the'axle, the same inclination may bc given to the spindle onl the other engl. The gather or' forward inclination ot" the spindle is givenV by means of the adjustable standard I-I; and the angle of allA the spindles determined by the application of the sam-e gauge. Anynumber of axles maythus be made precisely alike by the use of this gauge.

I am aware that gauges for determining the pitch of axles have been heretofore constructed and patented; and I do not claim broadly for such a gauge, but yonly for the form of lnyigauge in the respects in which it is peculiar as an instrument for that purpose.

What I claim as my invention, and desire to securenby Letters Iatent, is-

reversible gauge, for the purpose set forth, having on one side theadjnsln-ble standard B, tix'ed standard C, and adjustable swing D, anden the other the longitudinally-adjustnblc standard B', fixed standard G, and.

vertically-adjustable standard II, when constructed to operate substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

' y DAVID F. STRATTON.

Witnesses:

J. E. Fnxinonn, WILLIAM CARR. 

